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Gold twist drill bit with double margin flutes, 6.40 mm diameter

M.A. Ford

M.A. Ford CXDSR 0640AP Cyclone Xd 5X Double Margin Drill 6.40 mm

SKU CH-XQ44-RX7A1

A 6.40 mm solid carbide drill with double margins for five-times-diameter holes

  • 40 mm diameter drills precise holes in demanding materials
  • Cyclone Xd geometry extends tool life during high-speed cutting
  • Double-margin design improves hole straightness and surface finish
  • 5× diameter flute length reaches deeper features without pecking
  • Solid carbide construction resists wear in abrasive alloys

6.40 mm Cyclone Xd drill

The M.A. Ford CXDSR 0640AP is a solid carbide drill with a 5x diameter flute length and double margin design. It is built for high-performance drilling in a range of materials where hole accuracy and tool life are priorities. The 6.40 mm cutting diameter suits precise holemaking operations. This accessory is supplied new and ships directly from the manufacturer.

For CNC and precision holemaking

This drill suits machinists and shops running CNC equipment who need consistent size control and straightness in deeper holes. The double margin construction supports alignment through the cut. It is not for hand-held drilling applications where runout cannot be controlled. Buyers needing coolant-through capability or a different flute length should look at other series.

6.40 mm cutting diameter

The 6.40 mm diameter is the primary specification that determines fit for the intended hole size. It matches the tool path and holder requirements for that specific bore. Verify the diameter against your drawing or program before ordering. A Proposition 65 warning applies for chemicals known to the State of California to cause cancer and reproductive harm.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $102.99
Pricier than about 83% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

Does the 6.40 mm Cyclone Xd drill ship alone or with a case and coolant accessories?

The item is supplied as the solid double-margin drill only; no case, coolant or additional tooling is included in the shipment.

When should I choose the 6.40 mm 5X length over a shorter or longer variant?

Select the 6.40 mm 5X drill when the hole depth must reach five times the diameter in a single pass without pecking.

What does the 5X designation mean for chip evacuation and hole accuracy in steel?

The 5X length-to-diameter ratio allows deeper holes in one stroke, while the double-margin design improves guidance and roundness in steel.

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